Intermittently, there is a fairly high frequency intermittent screeching sound coming from the back offside wheel. The sound is reminiscent of something touching a spinning disc.  I assume that if it was the wheel bearing it would make a noise all the time?   The sound occurs at slow speed up to 30 or 40 mph particularly on left hand bends, and can be silenced by turning slightly to the right.  I have not heard the noise when turning right or traveling above 50 mph, and yesterday, I tr